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Code of Federal Regulations Title 24. Housing and Urban Development § 24.3285.204 Ground moisture control

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) Vapor retarder. If the space under the home is to be enclosed with skirting or other materials, a vapor retarder must be installed to cover the ground under the home, unless the home is installed in an arid region with dry soil conditions.

(b) Vapor retarder material. A minimum of six mil polyethylene sheeting or its equivalent must be used.

(c) Proper installation.

(1) The entire area under the home must be covered with the vapor retarder, as noted in § 3285.204(a), except for areas under open porches, decks, and recessed entries. Joints in the vapor retarder must be overlapped at least 12 inches.

(2) The vapor retarder may be placed directly beneath footings, or otherwise installed around or over footings placed at grade, and around anchors or other obstructions.

(3) Any voids or tears in the vapor retarder must be repaired. At least one repair method must be provided in the manufacturer's installation instructions.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 24. Housing and Urban Development § 24.3285.204 Ground moisture control - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-24-housing-and-urban-development/cfr-sect-24-3285-204/

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